Improvement in joinees  planes



AGRAY.

- JOINERS PLANE. No. 65,562. Patented June 11, 1867.

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IMPROVEMENT IN JOINERS' PLANES.

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TO ALL WHOM IT MAY- CONCERN:

Be it known that I, ARTHUR GRAY, of Naples, in the county of Cumberland,and State. of Maine, have invented a. new and useful Improvement inPlanes; and I hereby declare the following to be a full, clear, andexact descrip tion thereof, which will enable others to make and use myinvention, reference being bad to the accompanying drawings, formingpart of this specification, in which- Figure l shows a. side sectionalelevation of a plane-stoek with my improvement exhibited therein.

Figure Zrcpresents a front view of the back-iron and the method ofitsjattachment to the plane-stock.

Figure 3 represents a view of the clamping irou with its staple.

Figure 4 is an end view of the same showing the thumb-screw.

My invention has relation to a new and more convenient method ofsecuring the cutting-iron in ,an ordinary plane-stock.

a shows what I will. term the back-iron, secured to the stock by thescrew 6, and having .the projection a, which is somewhat within theaperture in the stock for the insertion of the cutter. Behind thisprojection is the small space at. e is the cutter, which is placedbetween the book-iron and the clamp h. The clamp holds the cutter asfollows; 7c .is a staple on the clamp, which staple passes under theprojection c, as seen in the drawing. m is a thumb-screw. The cutter isplaced on the back-iron a over the cutter is then put the clamp 71, withits staple 7:: under the projection c; then turn the thumb-screw, and asthe screw presses ofi' the upper end of the clamp from the cutter itwill bind the cutter at the lower end and be confinedby the staplepassing under the projection. Thus a simple arrangement is provided forholding the cutter. Byturning out the screw the pressure of the clamp isrelieved and the cutter can be removed or changed in position.

I do not claim the combination of an adjustable cap and a screw for thepurpose of securing the bit, which bit is held by two screws, one oneach side of the bit, as is exhibited in Letters Patent No. 10,748 to W.S.

Lo'ughborough, April 4, 1854. Neither do I claim the combination of amovable friction-plateseparateirorn the plane-iron, with the throat oftheplane-stock, the said plate beingsecured by a. screw passing throughit andthe plane-iron, as seen in Patent No. 20,615, to L. Bailey, J une22, 1858.

I also disclaim one or more bearers, a clamp-lever, and a thumb-cam, asa. means of fixing the plane-iron, adjusting the same in the stock; andremoving it therefrom, seen inanother patent to-said Bailey, No. 21,311,August 31, 1858. Neither do I claim the combination of a. cup and screwand two trunrlions, fitting in adjustable bearings to hold thecutting-iron of a plane, as set forth in Letters Patent to Seth C.Howes, No. 37,694, February 17, 1863. These devices are difierent frommine in not having the clamp h, with its staple 7:, to operate incombination with the thumb-screw m and projection c on the bottom of theback-iron to confine the cutter.

What I claim as my invention, and desire to secure by Letters Patent, isi The combination of the projection c, on the buck-iron, with the staple7c and thumb-screw m on the clamp,

when arranged as and for the purpose set forth.

ARTHUR GRAY.

Witnesses:

WM. HENRY Cnrrronn, I HENRY'G. Housron.

